Starch environment-friendly paper and preparation method thereof

Abstract

The invention discloses a starch environment-friendly paper, comprising a three-layer composite structure formed by an upper layer of polylactic acid polymer material, a middle layer of papermaking masterbatch and a lower layer of polylactic acid polymer material, wherein the ratio of the three layers is 1:8:1 in thickness; the papermaking masterbatch comprises the following components by mass percent: 30% of starch material, 20% of polylactic acid polymer material and 50% of calcium carbonate material. The invention provides the starch environment-friendly paper and the preparation method thereof, wherein the starch environment-friendly paper is prepared from plant materials which can be reproduced year after year, and constant calcium carbonate and natural assistants by special production equipment after polymerization under the conditions of not cutting the trees down, not using petroleum chemicals, not producing air pollution or not producing sewage. The starch environment-friendly paper produced by the method is a natural and non-toxic environment-friendly material, which is free of heavy metal or plasticizer and can be completely biodegraded. The starch environment-friendly paper can be supplied to all walks of life. Thus, the purposes of protecting the environment and not wasting resources are achieved.

Description

technical field [0001] The invention relates to a papermaking technology, in particular to a starch environment-friendly paper. Background technique [0002] In the existing papermaking technology, the raw materials for papermaking are mainly plant fibers, such as wood, straw, wheat straw, corn stalks, bagasse, reed, hemp, bamboo, etc. The production of paper can be roughly divided into two processes, pulping and papermaking. 1. Pulping: add some chemicals (such as lime or caustic soda) to the raw materials for cooking; or directly crush and grind the raw materials by machinery; then wash to remove unnecessary components and retain fibers to make pulp. If bleaching is required, add medicaments for bleaching. 2. Papermaking: The slurry is picked up with a grid or scooped up, dehydrated and pressed to dry, and finally sorted into paper. [0003] Therefore, the traditional paper industry is a light industry with large output, high water consumption and serious pollution. Fo...

AI Technical Summary

Problems solved by technology

At the same time, during the production process of papermaking, the exhaust gas, smoke and dust generated by boiler coal combustion and the noise of machinery also affect the health of workers and nearby residents.

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